Sleep and circadian rhythm managment system for circadian rhythm disruptions

Systems and methods for adjusting a user's circadian rhythm are provided. In some embodiments, a system may be configured to obtain information relating to the user's present circadian rhythm and information relating to one or more anticipated times of sleep and/or wakefulness. The system may generate a model for estimating the user's circadian rhythm. The system may also generate a model for estimating the user's homeostatic sleep drive. Based on one or both models, the system may generate instructions for activating the light source to adjust the user's circadian rhythm.